Stock issued during period shares cashless common stock warrants exercised.

No definition available.

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- Definition

Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21475-112644

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- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

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- Definition

Amount after tax of other than temporary impairment (OTTI) on investment in available-for-sale debt security, recognized in other comprehensive loss, attributable to parent entity.

+ References

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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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- Definition

Number of new stock issued during the period.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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- Definition

Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 06, 2021	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Cash equivalents			$ 134,800		$ 134,800		$ 36,800
Uncertain tax positions			$ 0		0		$ 0
Uncertain tax positions, interest or penalties recorded					$ 0	$ 0
Warrant Exercise [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 4.47
Stock Issued During Period, Shares, New Issues		137,446
Common Stock Warrants [Member]
Class of Warrant or Right, Outstanding			0		0		385,693
Common Stock [Member]
Cashless exercise of common stock warrants			178,847		178,847
Stock Issued During Period, Shares, New Issues			11,499,998		11,499,998
Common Stock [Member] \| Common Stock Warrants [Member]
Cashless exercise of common stock warrants	178,847
Class of Warrant or Right, Outstanding	248,247	248,247	0		0
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 4.47
Computer Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives					three
Marketable Debt Securities [Member]
Other than temporary impairment losses, investments portion in other comprehensive loss net of tax available-for sale securities			$ 0	$ 0	$ 0	$ 0